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JumpTap, Millenial Media and Yahoo round out the IDC top 5 list, with 13 percent, 11 percent and 9 percent of mobile ad revenues, respectively. Microsoft is next, at 7 percent, in a market IDC said should total $500 million for the year.

When Weide made his proclamation to BusinessWeek Bloomberg last month, he sent ripples throughout the industry by those who believed it was too soon for Apple to see so much success.

Further reading

Even so, Weide told eWEEK he calculated his numbers by taking Apple's June statement that iAd had secured $60 million in contract commitments and added the existing revenues of Quattro Wireless, the mobile ad startup Apple acquired to build iAd, for which Apple charges a hefty $1 million entrance fee.

"Jobs personally called marketers himself," Weide said, noting that this gesture carried weight with advertisers such as AT&T, Unilever, Best Buy, Citi Target and The Walt Disney Studios. "Given that, you can see how [Apple] would arrive at this kind of revenue."

Still, the numbers are very fluid. Weide's tabulation came before high-profile advertisers such as Adidas and Chanel backed out because of Apple CEO Steve Jobs' typically stringent rules for ads that run on applications on his iPhone and iPad devices.

And Weide has his doubters in the industry. SearchEngineLand's Greg Sterling, who watches the mobile ad market closely, was skeptical about the IDC numbers because Google commands the lion's share of mobile ad searches thanks to a success AdSense for Mobile program.

Also, Google's acquisition of AdMob, a major independent player prior to joining Google, sweetens Google's plot in the market.

All else being equal, that's 15 percent share per company, but one is hard pressed to argue how Google and AdMob together don't have more than the other providers.

Sterling isn't the only one to dispute the IDC numbers. Jumptap CMO Paran Johar said iAd may be capturing 21 percent of the dollars today, but not the impressions or the opportunity.

"They are a very focused on the super premium brand advertisers willing to spend $1 million minimum while controlling the brand's creative," Johar said.

Moreover, he said Apple shut down iAd to mobile Internet publishers, causing a surge in publishers wanting to work with a partner that is platform agnostic and open. Jumptap is reaping the benefits of this shift, he added.

While Weide is bullish on iAd in the near term, he also told eWEEK that Google will "in years to come crush Apple" because its Android platform will outsell the iPhone.

Indeed, Apple sells a handful of versions of the same iPhone. As good as that handset is, Android's open source delivery model has spurred many major phone makers--Motorola, HTC, LG and Samsung--to build more than 60 Android smartphones.

This provides a greater footprint for application developers to seed their software and generate revenues from mobile ads.

But that will take some time for in-app ads to foment on Android devices in earnest. For the time being, Weide said the iPhone and iAd, with richer ads and higher click-through rates, is the more attractive distribution vehicle in the U.S.

Accordingly so the majority of mobile marketers are looking at advertising on iPhone and iAd over Android devices and Google's AdMob unit.